[PATCH 3/7] rbd: pass null version pointer in add_snap()

[Alex Elder <elder@inktank.com>]

rbd_header_add_snap() passes the address of a version variable to
rbd_req_sync_exec(), but it ignores the result.  Just pass a null
pointer instead.

Signed-off-by: Alex Elder <elder@inktank.com>
---
 drivers/block/rbd.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4d8b52c..eacf255 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1664,7 +1664,6 @@ static int rbd_header_add_snap(struct rbd_device
*rbd_dev,
 	u64 new_snapid;
 	int ret;
 	void *data, *p, *e;
-	u64 ver;
 	struct ceph_mon_client *monc;

 	/* we should create a snapshot only if we're pointing at the head */
@@ -1689,7 +1688,7 @@ static int rbd_header_add_snap(struct rbd_device
*rbd_dev,

 	ret = rbd_req_sync_exec(rbd_dev, rbd_dev->header_name,
 				"rbd", "snap_add",
-				data, p - data, &ver);
+				data, p - data, NULL);

 	kfree(data);

-- 
1.7.9.5